IBM 8237, Installation And User Manual

Page: 100 / 166

Chapter 4. Troubleshooting, Installation, and Replacement Procedures
4-9
Figure 4-6. Four Expansion Port Types
Verify Expansion Port operation as follows:
•
Observe the indicators on the front panel of the 8237.
The Expansion Port LED should be ON.
The Power LED should be ON.
•
Observe the LEDs on the Expansion Port. The port’s LEDs should display the
current activity. Depending on which Expansion Port you have installed, and
your network configuration, some of the following conditions might be indicated:
ACT Blinking of this LED indicates that data is being transmitted or received
through the 10BASE2 Media Expansion Port.
PAR When this LED is on, the 10BASE2 Media Expansion Port has been
partitioned.
FDX When this LED is on, communication through the Expansion Port is in
full-duplex mode.